Answer:
Explanation:
Mechanical advantage is given by the ratio of output force by input force.
= Output force = 
= Input force = 
So,
The mechanical advantage of the pulley's is .
Answer:
Fossil fuels
Explanation:
The definition of "fossil fuel" is "a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms"
Answer:
Why do we wear white or light coloured clothes in summer?
- We wear white or light coloured clothes in summer because white coloured clothes reflect most of the sun's heat and absorb very little of the sun's heat and keeps our body cool.
Why do we wear black or dark coloured clothes in winter?
- We wear black or dark coloured clothes in winter because black coloured clothes absorb most of the sun's heat and keep our body warm.
Explanation:
Answer:
1) Diffusion is net movement of anything (e.g., atom, ions, molecules) from a region of higher concentration to a region of lower concentration.
2)
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides
3) One big difference between osmosis and diffusion is that both solvent and solute particles are free to move in diffusion, but in osmosis, only the solvent molecules (water molecules) cross the membrane.
4) Molecules tend to move from areas of higher concentration to areas of lower concentration.
I'm sorry, but I don't know how to do part #2. I think it's a lab.
Answer:
It's used in thermometers because it has high coefficient of expansion.
conifers,mushrooms
plants trap insects because they grow in soil which is usually thin and is also poor in nutrients , so they eat insects to fulfill their nuttient requirement
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